Table 1

Numbers of children evaluable for analysis of 250 children referred for screening

	Marfan	Not Marfan	Uncertain
	71	104	75
Excluded from analysis	14^1-150	38^1-151
Study population	57	66
Echocardiographic measurements per subject
⩾ 2	57	66
⩾ 3	46	34
⩾ 4	40	16

↵1-150 12 patients with incomplete data and two patients above 21 years of age.
↵1-151 32 control subjects with incomplete data, one control subject above 21 years of age, two control subjects with coarctation of the aorta, one control subject with aortic valve stenosis, one control subject with Ehlers-Danlos type IV, and one control subject with idiopathic aortic dilatation and atrial septal defect.